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pourable silicone moldmaking rubber(for foam resin crafts)

pourable silicone moldmaking rubber(for foam resin crafts)

Price : USD 5.8-7.5/kg
Packaging Details : 25kg/drum
Delivery : by sea
MOQ : 100kg
Place of Origin : China
Model Number : Addition cure silicone E642#
Category : Silicone Rubber
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Detailed Product Attribute
color : (eg红色)

Description of pourable silicone moldmaking rubber

pourable silicone moldmaking rubberis generally named two-components silicone rubber, Part A is a flowable liquid, part B is the curing agent. It features an exceptional fluidity and good operability. The mixing ratio is 1:1,mainly be suitable for making FDA molds application.


Applications of pourable silicone moldmaking rubber

pourable silicone moldmaking rubber could be mainly used for making concrete stones, precision molds, PU molds, for life casting, fabric finishing, seal for electronic components and solar circuit board, trademark decoration. etc.

Instructions for Use pourable silicone moldmaking rubber

It is recommended to homogeneously mix the base compounds before use.

Select a mixing container 4-5 times larger than the total volume of material to be mixed.
Weigh out the selected RTV and beta catalyst. Stir for several minutes scraping the
sides and bottom of the container carefully to produce a homogeneous mixture. When
using power mixers, avoid excessive speeds, which could entrap large amounts of air or cause overheating of the mixture, resulting in shorter pot life.
The air entrapped in the mixing step needs to be removed to eliminate voids in the cure product. This can be done by exposing the material to a vacuum of 10-20 mbar. The material will expand, crest and reduce to about the original level. Degassing is usually complete about two minutes after frothing ceases.
Automatic equipment designed to meter, mix and dispense a two-component silicone
liquid elastomer will add convenience to continuous large scale operations.


After mixing the selected RTV/Beta combination, the material will cure at room
temperature. Selection of the Beta will determine cure speed, the work life as well as thedemoulding time.

The system is sensitive to changes in heat and humidity and therefore variations in cure speed may be seen if one or both variables are changed.






Mixing Ratio


Operating time (Mins 25°C)


Curing time (Mins 25°C)

120 - 180

Curing time (Mins 60°C)

20 - 30

Hardness (A°)


Density ( g/cm 3 )


Viscosity (CS) (Part A)

30000 ± 5000

Viscosity (CS) (Part B)

5000 ± 500

Viscosity (CS) (After mixed)

10000 ± 2000

Tensile-strength( kgf /cm2 )

80 ± 5

Tear-strength (kgf /cm2 )

7 ± 2


300 ± 50

Handling and Safety Material Safety Data Sheets are available upon request.


SHELF LIFE: Twelve (12) months from date of shipment when stored at 24°C in original unopened packages.  


PACKAGE: Packed in clean 20kg/pail,  200kg/pail.


Any further informationof  RTV2 silicone rubberplease feel free to contact

Ms. Nancy

TEL: 086-755-89948019

FAX: 086-755-89948030

Mobile:86-189 3886 7585



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